Microsoft invested more than $13 billion in OpenAI. The bet delivered early dominance in generative AI. Now the two companies have redrawn their partnership. OpenAI will cap its revenue-sharing payments to Microsoft at $38 billion. The change could save the startup roughly $97 billion through 2030.
The revised terms surfaced Monday in a report from The Information. They build on an amended agreement the companies announced in late April. That earlier shift ended Microsoft’s exclusive license to OpenAI’s technology and allowed the startup to offer its models on rival cloud platforms. Microsoft remains the primary cloud provider. OpenAI products still ship first on Azure. But the startup gains flexibility to serve customers anywhere.
Details emerged against a noisy backdrop. In a federal courtroom in Oakland, California, Elon Musk’s lawsuit against OpenAI and Microsoft entered its second week. Microsoft CEO Satya Nadella took the stand. He expressed pride in the early risk his company took. “I was ‘very proud’ that Microsoft took the risk to invest in OpenAI when ‘no one else was willing’ to bet on the fledgling lab,” Nadella testified, according to CNBC.
Nadella described the 2023 ouster of Sam Altman as “amateur city.” He said he never demanded Altman’s reinstatement. Musk, for his part, never raised direct concerns with Nadella about the investment violating OpenAI’s original nonprofit commitments. A 2022 email from Nadella surfaced in court. In it he worried about repeating history. “I don’t want to be IBM and OpenAI to be Microsoft.” The analogy referenced IBM’s 1980s deal with Microsoft that later empowered a rival.
Yet the partnership produced results. Microsoft has recognized about $9.5 billion in revenue so far from the arrangement, according to deposition testimony cited by CNBC. Internal planning documents from early 2023, disclosed in the trial and reported by Bloomberg, showed Microsoft targeting a $92 billion return on its early stake. Nadella told the jury the investment “worked out well because we took the risk.”
The April restructuring marked a turning point. Microsoft’s license to OpenAI’s intellectual property runs through 2032 but is no longer exclusive. OpenAI can now pursue deals with Amazon, Google and others. The company has already struck agreements that expand its compute options. Revenue sharing, once open-ended and potentially reaching $135 billion, now stops at $38 billion. OpenAI keeps more of its future upside. Microsoft secures certainty and continued access.
Both sides framed the changes as simplification. “The agreement spells out” that Microsoft stays primary cloud partner while OpenAI gains broader reach, the companies said in their joint statement covered by The New York Times. The deal removes old constraints on OpenAI’s ability to raise capital and operate as a for-profit entity. It also drops prior language tied to artificial general intelligence milestones that once governed profit caps.
Analysts see pragmatism on both sides. OpenAI faces enormous compute demands and wants to court enterprise customers without friction. Microsoft, after years of tight integration, prefers defined financial outcomes over perpetual revenue shares. The $38 billion cap delivers that clarity. It also reflects OpenAI’s rapid revenue growth. The startup’s annualized run rate has climbed into the billions, reducing reliance on any single backer.
But tensions linger. Musk’s suit accuses OpenAI of abandoning its founding mission. He has argued Microsoft’s $10 billion infusion in 2023 tipped the balance toward commercial priorities. Court testimony revealed Musk viewed the investment as the moment the “tail wagged the dog.” Nadella countered that the partnership always carried a clear commercial element. No one treated it as charity.
The trial continues. Altman is scheduled to testify soon. Witnesses have already detailed the chaotic board events of November 2023. Nadella’s surprise at Altman’s firing. Concerns over communication breakdowns. These human dramas play out even as the technology races forward.
Microsoft’s Azure business has benefited enormously from OpenAI models. Copilot tools embedded across Office, GitHub and Windows owe their capabilities to that alliance. Yet the loosened ties signal a maturing market. Hyperscalers now compete aggressively for AI workloads. OpenAI can sell directly to enterprises on any infrastructure. That freedom may accelerate adoption. It may also erode some of Microsoft’s once-formidable moat.
Investors appear to approve. Microsoft shares have climbed steadily since the April announcement. The company’s market value sits near record highs. OpenAI, still private, eyes an IPO as soon as later this year. The capped payments free up capital for its own infrastructure buildout and talent retention.
So the relationship evolves. Less exclusive. More transactional. Still deeply intertwined. Microsoft holds licenses through the end of the decade. OpenAI retains Azure preference for initial deployments. Both gain breathing room. The $97 billion in projected savings for OpenAI, reported by The Information on May 12, underscores the scale of the shift.
Industry watchers expect further adjustments. Compute shortages persist. Model capabilities advance monthly. New competitors, from Anthropic to Chinese labs, pressure the duopoly. The Musk trial may produce additional disclosures that force more transparency. Or it may settle quietly once key testimony concludes.
Either way, the original 2019 vision has transformed. What began as a close collaboration to counter Google has become a nuanced commercial partnership. One that balances dependence with independence. Risk with reward. And, for now, litigation with continued cooperation.
That balance will define the next phase of AI infrastructure. Companies that master it stand to capture the largest share of enterprise spending. Microsoft and OpenAI have bought themselves time to do exactly that.
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